diff options
Diffstat (limited to 'arch/x86/include/asm/microcode_amd.h')
| -rw-r--r-- | arch/x86/include/asm/microcode_amd.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h new file mode 100644 index 000000000..9675c621c --- /dev/null +++ b/arch/x86/include/asm/microcode_amd.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_MICROCODE_AMD_H +#define _ASM_X86_MICROCODE_AMD_H + +#include <asm/microcode.h> + +#define UCODE_MAGIC 0x00414d44 +#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000 +#define UCODE_UCODE_TYPE 0x00000001 + +#define SECTION_HDR_SIZE 8 +#define CONTAINER_HDR_SZ 12 + +struct equiv_cpu_entry { + u32 installed_cpu; + u32 fixed_errata_mask; + u32 fixed_errata_compare; + u16 equiv_cpu; + u16 res; +} __attribute__((packed)); + +struct microcode_header_amd { + u32 data_code; + u32 patch_id; + u16 mc_patch_data_id; + u8 mc_patch_data_len; + u8 init_flag; + u32 mc_patch_data_checksum; + u32 nb_dev_id; + u32 sb_dev_id; + u16 processor_rev_id; + u8 nb_rev_id; + u8 sb_rev_id; + u8 bios_api_rev; + u8 reserved1[3]; + u32 match_reg[8]; +} __attribute__((packed)); + +struct microcode_amd { + struct microcode_header_amd hdr; + unsigned int mpb[]; +}; + +#define PATCH_MAX_SIZE (3 * PAGE_SIZE) + +#ifdef CONFIG_MICROCODE_AMD +extern void __init load_ucode_amd_bsp(unsigned int family); +extern void load_ucode_amd_ap(unsigned int family); +extern int __init save_microcode_in_initrd_amd(unsigned int family); +void reload_ucode_amd(unsigned int cpu); +extern void amd_check_microcode(void); +#else +static inline void __init load_ucode_amd_bsp(unsigned int family) {} +static inline void load_ucode_amd_ap(unsigned int family) {} +static inline int __init +save_microcode_in_initrd_amd(unsigned int family) { return -EINVAL; } +static inline void reload_ucode_amd(unsigned int cpu) {} +static inline void amd_check_microcode(void) {} +#endif +#endif /* _ASM_X86_MICROCODE_AMD_H */ |